5-Methoxy-benzo[d]isoxazole-3-carboxylic acid CAS 108805-39-6
Purity 97%+In StockPharmaceutical Standards
| CAS No. | 108805-39-6 |
| Molecular Formula | C9H7NO4 |
| Molecular Weight | 193.16 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-Methoxy-benzo[d]isoxazole-3-carboxylic acid (CAS 108805-39-6) reference standard, produced by CATO (ISO 17034 / CNAS / ANAB accredited). Molecular formula: C9H7NO4. Molecular weight: 193.16 g/mol. Trusted by 10,000+ laboratories worldwide for pharmaceutical analysis and QC.
Physical & Chemical Properties
| Molecular Formula | C9H7NO4 |
| Molecular Weight | 193.16 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1988 |
| Nitrogen Atoms | 1 |
Related Methoxy Standards
- 6-Methoxy-4-nitro-1H-indazole (CAS 1000341-08-1)
- 7-Methoxy-3-nitro-1H-pyrrolo[3,2-b]pyridine (CAS 1116136-57-2)
- 3-Methoxy-5-nitro-1H-indazole (CAS 1118574-49-4)
- 6-Methoxy-3-nitro-1H-pyrrolo[2,3-b]pyridine (CAS 1190310-33-8)
- 4-Methoxy-3-nitro-1H-pyrrolo[3,2-c]pyridine (CAS 1190314-09-0)
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- 4-Methoxy-3-nitro-1H-pyrrolo[2,3-b]pyridine (CAS 1190314-57-8)
- 6-Methoxy-3-nitro-1H-pyrrolo[3,2-b]pyridine (CAS 1190317-64-6)
Recommended Standards
- 4-(4-hydroxyphenyl)-1,2,4-triazolidine-3,5-dione (CAS 106821-08-3)
- 3-Ethyl-3H-[1,2,3]triazolo[4,5-d]pyrimidine-7-carboxylic acid (CAS 1095825-29-8)
- 3-(2-Nitrophenyl)-3-oxopropanal (CAS 1038336-52-5)
- 1-(5-Amino-4-fluoro-2-hydroxyphenyl)ethanone (CAS 2090484-64-1)
- Iproniazid-1-oxide (CAS 36781-38-1)
- 1-(Benzo[d][1,3]dioxol-5-yl)prop-2-en-1-ol (CAS 5208-87-7)
- Ethyl 4-bromo-4-methylpentanoate (CAS 343863-66-1)
- (S)-1-(2-((tert-Butyldimethylsilyl)oxy)-1-(4-chloro-3-fluorophenyl)ethyl)-4-(2-(methylsulfonyl)pyrimidin-4-yl)pyridin-2(1H)-one (CAS 1453851-69-8)
- 4-amino-1-[(2R,4R,5S)-4,5-bis(hydroxymethyl)oxolan-2-yl]pyrimidin-2-one (CAS 132235-73-5)
- Semaglutide Impurity 177 (CAS CATO-C4X-2226177)
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